Andrew Hartford Andrew Hartford is a pragmatic yet overprotective
billionaire adventurer, owner of several corporations, and creator of Mack Hartford, who he created two years prior to the series and led to believe was his son. Six months prior to the series, Andrew found a crown-like artifact called the Corona Aurora, but inadvertently freed two villainous brothers, Flurious and Moltor, from their imprisonment. As atonement, the Corona's guardian, the Sentinel Knight, tasked Andrew with keeping it safe and retrieving its scattered jewels. In pursuit of this, Andrew discovered the Universal Morphin' Grid, developed Ranger technology, and recruited Will Aston, Dax Lo, Ronny Robinson, and Rose Ortiz to become the Overdrive Rangers with the intention of leading them. However, after Mack becomes involved against his wishes, Andrew reluctantly allows him to take his place on the team and uses his wealth and knowledge to provide support for the Rangers. Later in the series, the Overdrive Rangers retrieve a magical sword called Excelsior and fuse it with the Sentinel Knight, granting him a new physical form with the ability to transform into Excelsior for the Rangers to wield in battle and enlarge himself. Additionally, following modifications carried out by Rose Ortiz, he gains the ability to transform into Battlizer armor for Mack Hartford. Once the Corona's jewels are recovered, the Corona itself completed, and Flurious and Moltor defeated, the Sentinel Knight regains his original form and takes the artifact for safekeeping. The Sentinel Knight is voiced by
Nic Sampson.
Flurious Flurious is an intelligent yet short-tempered and irritable ice monster. Millennia prior, a human Flurious and his brother Moltor sought out the Corona Aurora, only to be transformed into monsters and imprisoned on separate planets across the galaxy while the Sentinel Knight took the Corona and its jewels to Earth for safekeeping. After Andrew Hartford finds the Corona, he inadvertently frees the brothers from their imprisonment. Renewing his quest for the artifact, Flurious returns to Earth, takes over Norg's cave to establish it as a base for himself, creates monsters called "Chillers" to serve as foot soldiers, invents advanced technology, and battles the Overdrive Rangers. and turns the Fearcats into cyborgs in the hopes that they will serve him, only to be betrayed by them. Eventually, Flurious acquires one of the Corona's jewels and uses it to kill Moltor before mounting an attack on the Rangers to steal the remaining jewels and the Corona. Using their power to evolve into a stronger form, he overpowers the Rangers until Mack sacrifices himself to kill Flurious. Flurious is portrayed by
Gerald Urquhart.
Moltor Moltor is a direct, aggressive, vicious, and merciless draconic monster and a former human who competed with his brother Flurious to find the Corona Aurora, only to be transformed into monsters and imprisoned on separate planets. Upon being freed in the present, Moltor returns to Earth, takes up residence in a volcano, After several failed attempts, Eventually, Kamdor imprisons Miratrix in his jewel for failing him, uses his Corona jewel to summon a meteor to distract the Overdrive Rangers, and faces Will in a duel, during which Kamdor is killed in battle. Kamdor is primarily voiced by
Adam Gardiner while Richard Simpson voiced him in the episode "Pirate in Pink".
Fearcats The Fearcats are a race of malicious, sadistic, and ruthless
demonic,
feline-themed extraterrestrials who willfully destroyed planets and their inhabitants to demonstrate their power, possess the ability to enlarge themselves, and previously encountered Tyzonn. While the majority of them were imprisoned in a mirror-like artifact, Mig and Cheetar travel to Earth to find the Corona Aurora and use its power to free them. Growing impatient, they kidnap Ronny Robinson and use her Ranger powers instead, successfully freeing Benglo before Ronny and Tyzonn destroy the mirror, permanently trapping the imprisoned Fearcats. Undeterred, Cheetar dies fighting the Overdrive Rangers while Flurious uses his technology to transform Mig and Benglo into powerful cyborgs in the hopes that they would serve him. The pair subsequently betray him, stealing his technology to build giant robots to renew their quest for the Corona until they are eventually killed by the Overdrive Rangers.
Mig Mig is a cocky, impulsive, and battle-hungry
snow leopard-themed Fearcat who is eventually killed by Tyzonn. In his original form, Mig can conjure a bazooka-like weapon. In his cyborg form, he wields two pistols that can convert into daggers. Mig is voiced by Kelson Henderson.
Benglo Benglo is a level-headed and serious-minded
Bengal tiger-themed Fearcat and primary pilot of the Fearcats' giant robots who is eventually killed by Mack and the Sentinel Knight. In his original form, Benglo possesses arm-mounted
tekkō-kagi-like weapons. In his cyborg form, he wields a sword that can convert into a shotgun. Benglo is voiced by
David Weatherley. ==Guest characters==